!!!!!????? Gamma at the density of lead? Now this is so wildly ridiculous,
it fails even to send a shiver down my spine.
Which processes can be _that_ energetic? Even if we assume colliding
neutron stars, travelling at their usual kinetical + gravitational
potential energy, and assume a high conversion efficiency (several
10%) to gamma, intuitively this doesn't suffice. I don't have
Carl's envelopes at the house, could anyone give some ballpark figures
on energetics of such events?
If a hole eats a pulsar in one fell gulp, how much energy is released
then? And why does my every darn sentence seem to end with a question
mark, today?
Since we are at the holes, and evaporating primeval singularties should
give a fair gamma flash (how fast? did somebody record the GBR spectral
changes)? before winking out, can one look out of them? (But these should
be very rapid, and extremely faint, being observable just in low lightyear
range).
ciao,
'gene